Final answer:
The expansion of the Mongol Empire across Eurasia facilitated an increase in trade along the routes on the map.
Step-by-step explanation:
The correct answer is B - The expansion of the Mongol Empire across Eurasia.
The Mongol Empire, under the leadership of Genghis Khan and his successors, facilitated an increase in trade along the routes on the map. They created a vast and efficient network of roads, known as the Silk Road, which connected Europe, Asia, and the Middle East. This allowed for the exchange of goods, ideas, and technologies between different regions, leading to an increase in trade.
For example, the Mongols ensured safe passage for merchants and protected trade caravans from bandits and other threats. They also implemented a standardized system of weights and measures, making trade easier and more efficient. The expansion of the Mongol Empire opened up new opportunities for trade and cultural exchange, contributing to a significant increase in trade along the routes on the map.
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